How to have 15-Minute Increments In Outlook Calendar Drop-down box

Question

How to have 15-Minute Increments In Outlook Calendar Drop-down box

Reid-7439 20

Is there a way to change the default increment from 30 to 15 minutes in the drop-down menu when creating appointments and meetings? I'm NOT seeking to change the display in the calendar, just the choices offered in the drop down menu.

Here's a screenshot of what I hope to change User's image

4 answers

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Answer 1

Reid-7439 20

Thank you for your help. It's unfortunate that Outlook does not provide an option to modify the default duration increments.

Viego An 8,990 Reputation points Microsoft External Staff Moderator

2026-02-10T14:08:52.81+00:00

Hello @Reid-7439,

Thank you for your response. I understand that not being able to change the default duration increments in Outlook may cause inconvenience to your workflow. Since this behavior cannot be modified at the moment, please consider submitting feedback so the Outlook team can review it for future improvements.

We encourage you to submit feedback directly to Microsoft via the Outlook app (Help > Give feedback), or through Feedback Hub by

Go to: Microsoft 365 Feedback Hub > Send Feedback > Describe your proposal in detail.

Sharing your experience through this channel is the most impactful way to advocate for a change that would benefit you and other users.

Thank you again for your patience and for bringing this to our attention. While I can't change the product's design, please don't hesitate to reach out if you have any other questions about its current functionality. Your perspective is important, and I’m confident it will support the continued development of the Outlook app experience.

If you found my workaround helpful, please mark it as the Accepted Answer. This will make it easier for other users who face the same issue on this forum to find the correct approach. If you need any further assistance, feel free to reach out. I am here to help. Thank you very much for your understanding and your cooperation.

Answer 2

Reid-7439 20

The problem is not that the Calendar fails to display in increments of 15 minutes. It's that the Drop-down menus don't display in 15-minute increments.

The drop-down menus that I want to change are in the Outlook mail interface not the Outlook Calendar interface. That is, I encounter the drop-down menus when I create a meeting or appointment from Mail. So, the screenshot included in my previous post shows the where the problem is occurring.

If you need to see something else, just let me know.

Viego An 8,990 Reputation points Microsoft External Staff Moderator

2026-02-09T01:33:39.7266667+00:00

Hello @Reid-7439,

Thank you for your response.

I apologize for any earlier misunderstanding. Based on your clarification, it appears that you would like to adjust the meeting duration increments from 30 minutes to 15 minutes.

At this time, Outlook does not provide an option to modify the default duration increments. However, you can manually enter any specific time you require.

For example, if you want the meeting to last 15 minutes, you may simply type 9:15 AM as the end time and then configure the rest of the meeting details as usual.

In your case, the meeting would begin at 9:00 AM and end at 9:15 AM.

I hope this information is helpful. If you need any further assistance, please feel free to reach out. I am here to help. Thank you very much for your understanding and cooperation.

Answer 3

Reid-7439 20

Unfortunately, while my calendar now displays in 15 minute increments, the drop-down menus still do not.

Viego An 8,990 Reputation points Microsoft External Staff Moderator

2026-02-07T14:51:11.4266667+00:00

Hello @Reid-7439,

Thank you for your update. To better understand the situation, could you please share a screenshot of your Outlook calendar view where the 15‑minute increments are not appearing? Please make sure to hide or blur any personal information before uploading it.

Once I can see how the calendar appears on your side, I’ll be able to provide more accurate guidance.

Thank you for your cooperation, and I look forward to your update.

Answer 4

Dear @Reid-7439,

Thank you for reaching out to the Microsoft Q&A forum. I am happy to assist you.

To change the time scale in Classic Outlook, please follow the steps below:

Go to Calendar.
Select the calendar you want to adjust.
Open the View tab.
Click the three‑dots icon.
Choose Time Scale and select 15 minutes.
Close Outlook and reopen it to apply the change.

After restarting, your calendar will display time slots in 15‑minute intervals, making it easier to manage shorter appointments and schedule your time more precisely.

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I hope this information is helpful. If you need any further assistance, please feel free to reach out. I am here to help. Thank you very much for your understanding and cooperation.

If you found the answer useful, please click "Accepted Answer" and kindly give it an upvote.

If you have any follow-up questions, feel free to click "Comment" to continue the discussion.

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How to have 15-Minute Increments In Outlook Calendar Drop-down box

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